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Question DetailsAsked on 6/22/2016

What is the typical cost to paint the roof of a commercial building with that protective product

We are budgeting for painting the roof with that "white" paint that is being used on roofs to protect it.

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1 Answer


When you say "that white paint" sounds like you are talking about something from an infomercial. There are a lot of white (and silver) roof coating products - many of them scams or basically no different than plain paint, and some have a very short life. Some even degrade the existing finish so it ends up peeling off both the new product and the original factory coating.

I would really question WHAT you intend it to do - is this for a cooler roof ? In which case plain or high-reflective white - or more efficient yet metallic high reflectivity silver - paint would do the job. But bear in mind, once it gets dirty it typically loses about half or more of its beneficial properties.

If for insulation, unless you go with a thick (inches thick) spray-on foam roof coating then paint it like is done on process and storage tanks (and also has its longevity and storm damage issues), just a paint-thick coating is pretty much useless - not thick enough to provide any significant insulation.

If looking to extend the life of the metal roof, your best bet is proper preparation of the surface (from washing on up to stripping and wire brushing or sandblasting depending on amount of factory paint peeling or rusting) and then coating with the proper number of coats of long-life high quality metal paint.

I would talk (with photos) to a couple of reputable brand-name paint manufacturers or wholesalers about your roof's condition - I get the feeling you are jumping on an advertising gimmick here and might possibly be throwing your money away on a gimmick. Or if a prefab or manufactured building, talk to the local distributor for that brand - tuypically they will come out and visit you with recommendations, hoping to get future total reroof or new/add-on building business down the road.

If a member of BOMA or similar group, ask other people there at a meeting what they do for maintenance/life extension for their metal roofs.

Answered 4 years ago by LCD

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